package virtualbox-ose-dkms (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 5

[Steve]

Trying to run Virtual box-ose called an error dialogue asking to install the ose-dkms package. trying to install therecommended package ended with a fail and hence this report.
Ubuntu 11.04

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: virtualbox-ose-dkms (not installed)
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
NonfreeKernelModules: nvidia
AptOrdering:
 virtualbox-ose-dkms: Install
 virtualbox-ose-dkms: Configure
Architecture: amd64
Date: Mon Oct 10 13:28:03 2011
ErrorMessage: subprocess new pre-installation script returned error exit status 5
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
SourcePackage: virtualbox-ose
Title: package virtualbox-ose-dkms (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 5
UpgradeStatus: Upgraded to natty on 2011-04-30 (162 days ago)
VirtualBoxOse.ModInfo: